document.write( "Question 236471: If I had an old TV that is 15\" by 20\" and bought a new TV that measures 18\" by 32\", how do I make a formula to find out the percent of increase in area of the new TV Screen? I think I can find area of each, but am lost when it comes to finding the percent of increase. Can you help please \n" ); document.write( "
Algebra.Com's Answer #174055 by JimboP1977(311)\"\" \"About 
You can put this solution on YOUR website!
Original area = 15 * 20 = 300 inches^2
\n" ); document.write( "New area = 18 * 32 = 576 inches^2\r
\n" ); document.write( "\n" ); document.write( "To find the percentage increase we take the difference of the two which is 276.\r
\n" ); document.write( "\n" ); document.write( "Then we take the difference and divide by the original area:\r
\n" ); document.write( "\n" ); document.write( "276/300 = 0.92\r
\n" ); document.write( "\n" ); document.write( "Multiply by 100 to give a percentage = 92% increase.\r
\n" ); document.write( "\n" ); document.write( "To think about it another way we are saying that the area has increased by 92% of its original size.\r
\n" ); document.write( "\n" ); document.write( "So 92% of 300 is 276 which is the amount of the increase.\r
\n" ); document.write( "\n" ); document.write( "Does that make any sense at all?\r
\n" ); document.write( "\n" ); document.write( "Do you need further clarification?
\n" ); document.write( "
\n" );